When commercial divers in Victoria, Australia, plunge beneath the waves to hand-remove invasive sea urchins, they’re not just clearing reefs—they’re part of a global mosaic of hope for kelp forests. A sweeping new review, published in The Journal of Applied Phycology, reveals that the most successful efforts to restore these underwater forests aren’t driven by technology or top-down mandates, but by people—fishers, Indigenous stewards, scientists, and coastal residents working side by side. Kelp forests, which fringe coastlines from the Arctic to the Antarctic, are ecological powerhouses: they shelter marine life, support commercial fisheries, sequester carbon, and buffer shorelines from storms. Yet they’re vanishing under the triple threat of ocean warming, pollution, and ravenous sea urchin outbreaks fueled by disrupted food webs. The study, led by Dr. Aaron Eger of UNSW Sydney, brought together insights from over 100 researchers and practitioners across 35 kelp-bearing regions, marking the first global comparison of conservation strategies. What emerged wasn’t a one-size-fits-all fix, but a powerful pattern: progress follows partnership. In Canada, Indigenous-led stewardship is reviving ancestral marine practices. In Baja California, fishing cooperatives are co-managing kelp recovery. In Japan and South Korea, large-scale restoration programs blend traditional knowledge with modern science. These efforts share a common thread—local communities aren’t just consulted; they’re central architects of recovery. Yet action lags behind awareness. While nearly all regions monitor kelp health, active restoration is underway in fewer than half. The knowledge of why kelp is dying is widespread, but the leap to how to bring it back remains uneven. “We know a lot about why kelp forests are declining,” Dr. Eger said. “The challenge now is turning that knowledge into action at the scale needed to make a difference.” That call to action is gaining momentum. With carbon-storing kelp forests covering over 3.5 million hectares globally, their revival offers a tangible climate solution. The study’s authors hope their findings will guide funding, policy, and cross-border learning, proving that the best blueprints for ocean recovery are written not in labs alone, but in the lived wisdom of coastal communities. As sea temperatures rise, so too does the resolve of those who depend on these forests—rooted in place, and rising with purpose.